Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A deoxidizing slag suitable for silicon killed steel

A technology of silicon-killed steel and slag, which is applied in the field of slag for deoxidation of silicon-killed steel, can solve the problems of uneven deoxidation and low deoxidation efficiency, and achieve the effects of shortening slagging time, rapid deoxidation ability, and low melting point

Active Publication Date: 2019-11-15
LAIWU STEEL YINSHAN SECTION CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This deoxidation method has the phenomenon of uneven deoxidation and low deoxidation efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation method of the deoxidation slag material applicable to silicon-killed steel of the present invention is carried out according to the following steps:

[0045] 1) Mix the wollastonite-containing raw material with metal silicon and carbon powder evenly to obtain a mixed material, and the preparation ratio is by weight:

[0046] Raw material containing wollastonite: metallic silicon: carbon powder=1:0.15:0.02;

[0047] The raw material containing wollastonite is: wollastonite ore, and its composition range is: SiO 2 : 40~52%, CaO: 40~52%, MgO: 0~8%, Fe 2 o 3 ,2 o 3 <5%, S<0.05, P<0.05.

[0048] 2. Place 20% of the total weight of the obtained mixed material in a heating furnace to heat and melt it, then add the remaining 80% slag material, when all the slag material is melted, stop the power supply, cool naturally to form a pre-melted slag material, and then physically Crushing to a particle size of ≤25mm to obtain deoxidizing slag suitable for silicon-...

Embodiment 2

[0058] The preparation method of the deoxidation slag material applicable to silicon-killed steel of the present invention is carried out according to the following steps:

[0059] 1) Mix the wollastonite-containing raw material with metal silicon and carbon powder evenly to obtain a mixed material, and the preparation ratio is by weight:

[0060] Raw material containing wollastonite: metal silicon: carbon powder=1:0.5:0.07;

[0061] The raw material containing wollastonite is: wollastonite ore, and its composition range is: SiO 2 : 40~52%, CaO: 40~52%, MgO: 0~8%, Fe 2 o 3 ,2 o 3 <5%, S<0.05, P<0.05.

[0062] 2. Place 100% of the total weight of the obtained mixed material in a heating furnace to heat and melt. When all the slag is melted, stop the power supply, cool naturally to form a pre-melted slag, and then physically crush it to a particle size of ≤25mm. , to obtain deoxidation slag suitable for silicon-killed steel.

[0063] The above-mentioned heating furnace is ...

Embodiment 3

[0071] The preparation method of the deoxidation slag material applicable to silicon-killed steel of the present invention is carried out according to the following steps:

[0072] 1) Mix the wollastonite-containing raw material with metal silicon and carbon powder evenly to obtain a mixed material, and the preparation ratio is by weight:

[0073] Raw material containing wollastonite: metallic silicon: carbon powder=1:0.3:0.04;

[0074] The raw material containing wollastonite is: wollastonite ore, and its composition range is: SiO 2 : 40~52%, CaO: 40~52%, MgO: 0~8%, Fe 2 o 3 ,2 o 3 <5%, S<0.05, P<0.05

[0075] 2. Put 50% of the total weight of the obtained mixed material in a heating furnace to heat and melt, and then add the remaining slag when there is still the remaining material. When all the slag is melted, stop the power supply and cool naturally to form pre-melted slag material, and then physically crushed to a particle size of ≤25mm to obtain slag for deoxidation...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of iron and steel metallurgy and discloses slag for deoxidization and applicable to silicon-killed steel. The slag for the deoxidization and applicable tothe silicon-killed steel is prepared from the following components in percentage by mass: 30 to 45 percent of CaO, 30 to 40 percent of SiO2, 10 to 30 percent of Si, 2 to 5 percent of C, less than or equal to 5 percent of Al, less than or equal to 5 percent of Al2O3, less than or equal to 0.1 percent of S and less than or equal to 0.05 percent of P; the ratio of WCaO / WSiO2 is 0.9 to 1.2, wherein WCaO is the mass percent of the CaO in the slag and WSiO2 is the mass percent of the SiO2 in the slag. The invention further provides a preparation method of the slag for the deoxidization and applicable to the silicon-killed steel. The slag for the deoxidization, provided by the invention, is a whole pre-melted material, so that the components are uniform, the melting point is low and the melting time is short. When the slag is used in a factory, rapid deoxidization and rapid slag formation are facilitated.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, in particular, the invention relates to a deoxidizing slag suitable for silicon-killed steel. Background technique [0002] In the steelmaking process, aluminum deoxidizers and aluminum-containing slags for deoxidation are widely used, and have the advantages of fast melting speed and high deoxidation efficiency. 2 o 3 Inclusions will cause nodulation at the nozzle, which will affect the normal progress of continuous casting. Therefore, the use of aluminum deoxidizers for deoxidation must be based on a good full-protection casting. [0003] In order to reduce production costs, some steel types do not use stopper rods for flow control or fully protected submerged nozzles in continuous casting production. Such steel types are not suitable for aluminum deoxidizers and aluminum-containing slags for deoxidation. for deoxygenation. In the production of H-shaped steel, since the cro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/06
CPCC21C7/06
Inventor 刘洪银赵立峰陈永生赵晨光徐尚富郝帅亓伟伟孙建卫胡增跃王孝科王利王奉县
Owner LAIWU STEEL YINSHAN SECTION CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com